渡槽是渠道跨越沟、路或洼地的明流交叉建筑物,由于具有比修建填方渠道更能通过较大水流,比修建倒虹吸水头损失小,比修建涵洞经济,管理运用方便的特点,在山地、丘陵地区的引水、输水工程中应用较为广泛。目前应用最多的梁式渡槽,其进出口段、支撑结构大都形式单一,施工较为简单。而槽身却形式多样:有矩形、U 形、圆形、抛物线形等。其中 U 型槽身属轻型薄壳结构,优点很多,但 Aqueduct is a cross-flow crossing structure with channels crossing ditches, roads or depressions. Due to its advantages of being able to pass large water flow more than constructing a channel of filling, it is less loss than constructing a inverted siphon head, more economical than constructing a culvert, and convenient for management. Mountain, hilly areas diversion, water diversion project is widely used. Currently the most widely used beam aqueduct, the import and export section, the majority of support structures in a single form, the construction is relatively simple. The body is diverse and diverse: a rectangular, U-shaped, circular, parabolic and so on. Which U-shaped body is a lightweight shell structure, a lot of advantages, but